I drop a penny from the top of the tower in Midland Borough and it takes 1.85 seconds to hit the ground. Calculate the velocity at impact in m/s.

What does work depend on in scientific terms?

Which object has the greatest inertia? (1) a 0.010-kg bullet traveling at 90. m/s (2) a 30.-kg child traveling at 10. m/s on her bike (3) a 490-kg elephant walking with a speed of 1.0 m/s (4) a 1500-kg car at rest in a parking lot

Suppose we imagine the Sun to be about the size of a grapefruit. How big an area would the orbits of the nine planets of the Solar System cover?

Hypokinetic means: a. water exercise. b. too little exercise. c. too little pressure. d. infectious

Billy is listening to a conversation through a solid 2 meter thick concrete wall. If it only takes. 05 seconds for the conversation to reach him, what is the speed of sound in concrete?

Two copper wires with different diameters are joined end to end. If a current flows in the wire combination, what happens to electrons when they move from the larger-diameter wire into the smaller-diameter wire?

A baseball player is warming up and tosses a ball straight up into the air. The ball travels up until it reaches some maximum height, and then falls back down to the player/'s hand.

Volume can be measured in liters or cubic meters. a. T b. F

A spring with a spring constant of 1200 N/m has a 55-g ball at its end. The energy of the system is 5.5J. What is the amplitude of vibration?

Force F1 acts on a particle and does work W1. Force F2 acts simultaneously on the particle and does work W2. The speed of the particle does not change. Which one of the following must be true? a. W1 is zero, and W2 is positiveb. W1 = - W2c.